HM
Harold Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clinton-County, Ohio
Our Model Tree links this Harold Martin across the 1920, 1930 and 1940 US Censuses in Clinton-County, Ohio (XGBoost, ~Confirmed), with identified parents Jerrie & Jesse — first a head (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Ohio |
| Surname | Martin |
| Given Name | Harold W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Clinton |
| Additional Details | |
| Occupation | Recreation |
| Industry | Recreation Dept |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 728 |
| Highest Grade | Hs 2 |
| 1935 Residence | Ohio |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Recreation |
| Township / Ward | Wilmington City |
| Est. Birth Year | ~1914 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| James Martin | Son | — | 1 | ~1939 |
| Harold Martin | Son | — | 3 | ~1937 |
| Lillian Martin | Spouse | — | 21 | ~1919 |
| Harold Martin | Head | — | 26 | ~1914 |
Census Appearances
1920
Clinton, Ohio
Son, age 5
Clinton, Ohio · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Clinton, Ohio
Son, age 16
Clinton, Ohio · implied b. ~1914 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harold W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Occupation | Labour |
| Industry | Odd Jobs |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Clinton-County, Ohio
Head, age 26
Clinton-County, Ohio · implied b. ~1914 — 4 household members
| Surname | Martin |
| Given Name | Harold W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Clinton |
| Occupation | Recreation |
| Industry | Recreation Dept |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 728 |
| Highest Grade | Hs 2 |
| 1935 Residence | Ohio |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Harold Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jerrie Martin (~0.92 confidence) and father Jesse Martin (~0.92 confidence) and mother Estella Martin (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jerrie Martin
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Jesse Martin
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Estella Martin
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Martin
Head · 1940 · age 26 · b. ~1914 · Ohio
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Clinton-County, Ohio
Open full size
1940 US Federal Census — Clinton-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03042-00453)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Olive M. Rockwell | 53 | Head | Genl. Housework | Ohio |
| 2 | John F. Pahl | 29 | Son-in-law | Railway Express | Ohio |
| 3 | Nellie F. Pahl | 27 | Daughter | — | Ohio |
| 4 | George Barns | 63 | Head | Attorney | Ohio |
| 5 | Virginia Barns | 43 | Daughter | — | Ohio |
| 6 | Stanley M. Barns | 40 | Son | — | Ohio |
| 7 | Margaret Spurgeon | 90 | Mother-in-law | — | Ohio |
| 8 | Carl L. Spicer | 38 | Head | Teacher | Ohio |
| 9 | Verna Spicer | 33 | Wife | — | Ohio |
| 10 | Peter Spicer | 13 | Son | — | Ohio |
| 11 | Patricia Spicer | 3 | Daughter | — | Ohio |
| 12 | David M. Jenkins | 74 | Head | — | Ohio |
| 13 | Halle N. Jenkins | 74 | Wife | — | Ohio |
| 14 | Darius Morton | 77 | Head | — | Ohio |
| 15 | Susie N. Morton | 70 | Wife | — | Ohio |
| 16 | Everett Ellison | 31 | Head | Laborer | Ohio |
| 17 | Luella M. Ellison | 26 | Wife | Waitress | Ohio |
| 18 | Harold W. Martin THIS PERSON | 26 | Head | Recreation | Indiana |
| 19 | Lillian Martin | 21 | Wife | — | Kentucky |
| 20 | Harold Martin | 3 | Son | — | Ohio |
| 21 | James W. Martin | 1 | Son | — | Ohio |
| 22 | Harry F. Garrison | 36 | Head | Trip Hammer | Ohio |
| 23 | Clarice Garrison | 27 | Wife | — | Ohio |
| 24 | Benny Garrison | 11 | Son | — | Ohio |
| 25 | Jean Garrison | 7 | Son | — | Ohio |
| 26 | Richard Garrison | 5 | Son | — | Ohio |
| 27 | Harry Garrison | 1 | Son | — | Ohio |
| 28 | Lindley Lundy | 39 | Head | Manager | Ohio |
| 29 | Pauline W. Lundy | 36 | Wife | — | Ohio |
| 30 | Richard Lundy | 15 | Son | — | Ohio |
| 31 | Nina Mcpherson | 60 | Mother-in-law | Practical Nurse | Ohio |
| 32 | John C. Turner | 56 | Head | Salesman | Ohio |
| 33 | Mamie H. Turner | 48 | Wife | — | Ohio |
| 34 | Leroy W. Purdum | 30 | Head | Meat Cutter | Ohio |
| 35 | Mildred W. Purdum | 25 | Wife | — | Ohio |
| 36 | Robert Purdum | 5 | Son | — | Ohio |
| 37 | John Purdum | 3 | Son | — | Ohio |
| 38 | William Purdum | 23 | Brother | Clerk | Ohio |
| 39 | Robert Mccollister | 27 | Head | Truck Driver | Ohio |
| 40 | Madeline Mccollister | 27 | Wife | — | Ohio |
Pedigree Summary
Harold
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)